287385696 has 144 divisors (see below), whose sum is σ = 895723920. Its totient is φ = 86860800.

The previous prime is 287385677. The next prime is 287385719. The reversal of 287385696 is 696583782.

It is a happy number.

287385696 is a `hidden beast` number, since 2 + 8 + 73 + 8 + 569 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220246 + ... + 221546.

It is an arithmetic number, because the mean of its divisors is an integer number (6220305).

Almost surely, 2^287385696 is an apocalyptic number.

287385696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287385696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447861960).

287385696 is an abundant number, since it is smaller than the sum of its proper divisors (608338224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287385696 is a wasteful number, since it uses less digits than its factorization.

287385696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1378 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 287385696 is about 16952.4539816512. The cubic root of 287385696 is about 659.9155814893.

The spelling of 287385696 in words is "two hundred eighty-seven million, three hundred eighty-five thousand, six hundred ninety-six".